예제 #1
0
파일: io.py 프로젝트: YakNazim/psas_packet
    def listen(self):
        """Read from socket, and decode the messages inside.
        """

        # grab bits off the wire
        buff, addr = self.conn.recvfrom(2048)
        timestamp = time.time()

        if buff is not None:
            seqn = SEQN.decode(buff[:SEQN.size])
            if seqn is None:
                return
            yield timestamp, ('SEQN', seqn)
            buff = buff[SEQN.size:]

            if self.fh is not None:
                self.fh.write(HEADER.encode(SEQN, int(timestamp)))
                self.fh.write(SEQN.encode(seqn))
                self.fh.write(buff)
                self.fh.flush()

            # decode until we run out of bytes
            while buff != '':
                try:
                    bytes_read, data = messages.decode(buff)
                    buff = buff[bytes_read:]
                    yield timestamp, data
                except messages.MessageSizeError:
                    print("out of sync")
                    return
                except:
                    print("Reader Broke!")
                    return
예제 #2
0
    def test_decode(self):
        expect = {
            'timestamp': 1,
            'VCC': 5.0,
            'Gyro_X': 1.0,
            'Gyro_Y': 0,
            'Gyro_Z': 0,
            'Acc_X': 98.0,
            'Acc_Y': 0,
            'Acc_Z': 0,
            'Magn_X': 0,
            'Magn_Y': 0,
            'Magn_Z': 0,
            'Temp': 25,
            'Aux_ADC': 0,
        }

        raw = b'ADIS\x00\x00\x00\x00\x00\x01\x00\x18\x08\x13\x00\x14\x00\x00\x00\x00\x0b\xbb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

        bytes_read, output = messages.decode(raw)
        fourcc, data = output

        self.assertEqual(bytes_read, messages.HEADER.size+ADIS.size)
        self.assertEqual(fourcc, 'ADIS')
        self.assertEqual(len(expect), len(data))

        for item, value in data.items():
            sigfig = expect[item] / 100.0 # 1%
            self.assertAlmostEqual(expect[item], value, delta=sigfig)
예제 #3
0
파일: io.py 프로젝트: YakNazim/psas_packet
    def read(self):
        """Read the file and return data inside it
        """

        for _fourcc, raw in self.scan():
            _bytes_read, data = messages.decode(raw)
            yield data